Articles (1)

Getting started with the AVR microcontroller series

A quick introduction to the AVR microcontroller series with sample schematics of inputs, outputs, serial and some basic circuit drawing.

Atmel AVR AT90S8515, ATmega8, ATtiny2313 and ATtiny15 microcontrollers.

Projects (11)

Alarm disabling unit for production equipment

Simple unit to silence the audible alarm on a production equipment, uses an AVR ATtiny2313 microcontroller.

Alarm disabling unit #2 installed and connected to production equipment. Alarm LED is lit.
Alarm disabling unit for production equipment with long stop warning

Simple unit to silence the audible alarm on a production equipment, additional warning if not resolved within 30 or 60 minutes. Uses an AVR ATtiny2313 microcontroller.

Alarm disabling unit #1 installed and connected to production equipment. Alarm LED is lit.
Emergency strobe light

33 high intensity LEDs are controlled with a AVR ATtiny2313 microcontroller. Four flashing patterns that can be set manually or cycle through.

Emergency strobe light complete, showing front with all 33 LEDs mounted and wired.
Fan and temperature controller with LCD

Reads temperature and controls a fan using a PWM output, fan and alarm set point can be adjusted and is shown on a LCD. Uses an AVR ATmega8 microcontroller.

Fan and temperature controller, showing temperature and set points for fan and alarm on the LCD. Temperature sensor LM35 can be seen sticking out.
Home power consumption measuring unit

Measures the power consumption by counting LED pulses from the home fuse box. Measurements can be read via a serial interface, uses the AVR ATtiny2313 microcontroller.

Home power consumption measuring unit is connected and running some communication tests.
Light sensor with LED display

Measures light intensity and shows the value on a LED display, if value passes over/under the set point the output is enabled. Uses the AVR ATmega8 microcontroller.

Showing current light value, the light sensor TSL250R can be seen poking out on the top.
Mood light (RBG) with 100 mA outputs

Simple mood lamp controller with three PWM channels, max 100 mA output pr channel. Uses the AVR ATmega8 microcontroller.

Some final testing of the mood light controller circuit board before installing it in the box.
Production line stop alarm

Simple alarm circuit to monitor up to eight inputs, from e.g. production equipment. If any inputs are triggered an alarm is sounded. Uses the AVR AT90S2313 microcontroller.

An inside view of the casing with AT90S2313 microcontroller, optocouplers and LEDs wired up.
Security keypad with programmable PIN

Keypad with programmable PIN code, two outputs (modes) and protection against repeated incorrect PINs. Uses an AVR ATtiny2313 microcontroller.

Closeup of the keypad component installed in the keypad module.
Sound alarm control unit

Simple unit to control three sound signals; beep, siren and buzzer. Uses an AVR ATtiny2313 microcontroller.

Sound alarm controller is complete, mounted and connected.
Warning strobe light controller

Two channel strobe light controller, using the AVR ATtiny2313 microcontroller. Five flashing patterns that can be selected manually or cycled through. PWM output.

Warning strobe light controller, connected to four warning lights with 10mm high intensive LEDs.

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